Mouse/keyboard freeze when switching back to Win7 (KVM)

Hi,

I have one machine with Win7 x64 installed and one machine with Ubuntu x32. Using a Belkin Flip USB KVM switch to change between the 2. This was working until recently - now when I switch back to Win7 the mouse and keyboard freeze and the only solution is to reboot. I can switch back to Ubuntu where everything is fine and dandy.

Had a look at the event viewer and under System I can see some messages which may be related, e.g.:

The driver \Driver\HidUsb failed to load for the device USB\VID_1532&PID_0101&MI_00\7&7cff8c3&0&0000.

I have since bought a Digitus USB KVM Switch (with audio) and I get the exact same thing. Starts up fine, switch to Ubuntu fine, switch back to Win7 and the mouse and keyboard freeze. When I have the device manager open, I can see some yellow triangles next to some of the USB input devices.

Anyone have any idea how I can resolve this?

Make sure you have proper drivers...?

There are no drivers available for this KVM switch. It looks like I am not the only one with this problem:

http://www.sevenforums.com/drivers/2161-keyboard-mouse-not-recongnized-kvm-switch.html

Seeing that both the Belkin Flip KVM and Digitus don't work, surely there must be some way to make them work by tweaking the OS?